Alkanes
\[\require{mhchem}
\text{Basic Structure: }\ce{H3C-CH2-CH2-\cdots-CH2CH3}
\]
Free Radical Substitution
Initiation
\[\ce{ X - X ->[\text{UV Light}] 2 X\bullet}\]
Propagation
\[\begin{align*}\ce{X\bullet + H - R & -> HX + R\bullet}\\ \ce{R\bullet + X - X & -> RX + X\bullet}\end{align*}\]
Termination
\[\begin{align*}\ce{X\bullet + \bullet X & -> X_2}\\\ce{R\bullet + \bullet R & -> R_2}\\\ce{R\bullet + \bullet X & -> RX}\end{align*}\]